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680 Chesapeake Drive Redwood City CA 94063 (650)364 9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707) 792-0342 <br /> Analytical ',551 Industrial Road San Carlos CA 94070 41 1 1 (650)232 9600 FAX(GSO)232-96!2 <br /> Sequoia Analytical Client Project 11) L904337- Shell Oil Company Sampled Apr 22, 1999 e <br /> 1551 Industrial Blvd Sample Descrlpt Water, EW-2 Received May 5, 1999 <br /> San Carlos, CA 94070 Analysis Method EPA 8010 Analyzed May 6, 1999 <br /> Attention Mike Gregory Lab Number 905-0268 Reported May 10, 1999 <br /> QC Batch Number GCO50/99801006A <br /> Instrument ID HP-6 <br /> HALOGENATED VOLATILE ORGANICS (EPA 8010) <br /> Analyte Detection Limit Sample Results <br /> N9/L N9/L <br /> Bromodichloromethane 050 N D <br /> Bromoform 050 N D <br /> Bromomethane 1 0 N D <br /> Carbon tetrachloride 050 N D <br /> Chlorobenzene 050 N D <br /> Chloroethane 1 0 N D <br /> Chloroform 050 N D <br /> Chloromethane 1 0 N D <br /> Dib romochloro methane 050 N D <br /> 1,3-Dichlorobenzene 050 N D <br /> 1,4-Dichlorobenzene 050 N D <br /> 1,2-Dichlorobenzene 050 N D <br /> 1,1-Dichloroethane 050 N D <br /> 1,2-Dichloroethane 050 N D <br /> 1,1-Dichloroethene 050 N D <br /> cls-1,2-Dichloroethene 050 N D <br /> trans-1,2-Dichloroethene 050 N D <br /> 1,2-Dichloro propane 050 N D <br /> cess-i,3-Di6hloropropene 0-50 N-D <br /> trans-1,3-Dichloropropene 050 N D <br /> Methylene chloride 10 <br /> 1,1,2,2-Tetrachloroethane 050 N D <br /> Tetrachloroethene 050 N D <br /> 1,1,1-Trichloroethane 050 N D <br /> 1,1,2-Trichloroethane 050 N D <br /> Trichloroethene 050 N D <br /> Trichlorofluoromethane 050 N D <br /> Vinyl chloride 1 0 N D <br /> 1,2-Dibromoethane 1 0 N D <br /> Surrogates Control Limit % % Recovery <br /> Dibromodifluoro methane 50 150 134 <br /> 4-Bromofluorobenzene 50 150 113 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL, #1271 Please Note <br /> Over calibration range due to extensive air contamination <br /> Charlie Westwater <br /> Project Manager <br /> 9050264 SSS <5> <br />